Gas-lamp.



W. J. FRY.

GAS LAMP.

APPLIOATION FILED JAH. 25, 1908.

Patented Jam. 19, 1909.

z SHEETS-SHEET 1'.

Patented Jan. 19, 1909.

W. J. FRY.

GAS LAMP.

APPLIoATIoN FILED un. 25, 190s.

' vthe following. is a UMTED sTATEs PATENT onirica.'

WILLIAM J. FRY,'OF CHICAGO, ILLINOIS, -ASSIGNORJ @Y M-ESN E ASSIGNMENTS, TO AURORA 'inLnMINATiNG rNnM-ANTLE coMPANY, or Annone., VILLINOIS, A. ooR'PoRaTIoNoF fen-sam.

ILLINOIS.

No.noenoa.

Specification Aot Letters Patent.

Application led Januaryv, 1908. Serial No. 412,532.

iBatented Jan. 19, 1909.

To all whom it may ramera:

Be it known .that i, WILLIAM J. Far, .-a citizen .erf the .United States, residingat .Ohicago, .in Kthe county .of .Cook and State of Illinois, have invented a' certain new and useful Improvementin -Gas-.Lamps,of which full, clear, concise, :and exact description.

' .My invention relates to more particularly to with incandescent .1n es, .and its object is to providea lamp of rsimple construction, having .a .high illuminating power resulting from an .unusually low consumption of gas.

Certain features of my invention contemplate improvements inthe parts which con` duct'a mixture ofgas and 4air to the burner.

Another feature of my .invention relatos more particularly to the .burner land con` sists in providing theburner with ing an .opening or .mouth which gradually iares outwardly, said unouth or opening being preferably cone-shaped.

Another feature of my invention relates to ithe structure and arrangement .of the lamp casing, said casing in effect serving .as a chimney, and being provided with ran .adinstable lower .section surrounding lthe burner, which section .is adapted -to be raised oradjusted to ,permit of ready access .to said burner.

Another feature' of my invention consists in the location .of .the pilot' lamp and the means for .supporting the same.

rllhese and other features of my invention may be .more readily understood by reference to the .accompanying drawings, in Which- Figure l y,is `a view Aof the lamp partly in side Aelevation and partly in verticalsection;

gas llamps provided Fig. 2 isa sectional view .on ythe line 2-2 of' Fig. 3; Fig. 3 1s a lan sectional view taken on `the line 3-3 o Fig. .2;and Fig. 4 is a fragmentary view, principally in section, -at right angles to Fig. 1.

Like V parts are designated by similar characters `of reference throughout the 'several views.

The damp of my invention is designed to be -attached tothe usual gas delivery pipe l by means ofthe coupling 2, in which is located the ordinary rotary valve 3 for controlling .the How of'gas to the lamp. Extending from the lower end of the coupling 2 is a delivery pipe extension 4, which is seable lgas lamps, and

a tip .havf

cured in an opening'in the outer bend or vertex .of -an elbow pipe, which forms an air-supply pipe. The two varms of the'pipe 5 extend downwardly, and said .pipe is provided with .,alined openings -fonming a ver-` tical passageway through the bend thereof.

.The lamp casing .6 .is secured in .anysuitmanner .upon ,the ends of the ,pipe 5, said v.pipe communicating Vthrough .openings 7 in the lamp case with 'Itho exterior of said case.

It is well known that if the airis .admitted in blasts to the .'Bunsen' tube, thereb is surging or unequal pressure in the gassupply tube and a corresponding surging effect is produced on ,the flame. By thus .extending the arms of the air-supply pipe downward, there is less tendency for the air to pass in the form of blasts into =thepassage where :the `gas 4is mixed with fair'. There is also less tendency for dust, rain, snow, etc., to blow in with the air, since to do so it must 'first pass .in an upward direction. Moreover, the inclined walls of the .air passages Ado notreadily collect dust. The advantages resulting from the above-described structure and arrangement of the air-supply pipe 'are thus obvious.

Threaded in the lower end of the pipe extension il, and .projecting into the passa, eway through the air-supply .pipe 5, is `t e usual injector nozzle 8. The base or .inlet opening of the nozzle is covered with .a wire gauze strainer 9, in the shape of a thimble.4 i y solid particles collecting on .top of .the thimble-shaped strainer 9 `tend to roll ofi' and hence do not tend to clo T the strainer.

Threaded into the under si e or inner bend of the elbow .pipe 5 .is the Bunsen tube 10 which conducts. the mixture of air .and ,gas to 'the burners .11. Said air-supply pipe 5 thus forms a coupling for uniting the pipe extension 4 .and the Bunsen tube l0. The burners ll are connected to the ipe 10 by means of a coupling 12. In the rawings a three way coupling islshown, having a tubular body portion from which three outwardl vand downwardly curved branches 13 exten ,in a radial direction from said xbody portion. The burners 11 are threaded u on the ends of the coupling branches 13. AMlintles Mare depended from the burner tips l5 in the .usual manner.

A pilot burner 16 extends to the lower ends of the mantles. In case a .plurality of atthe central portion of its base.

burners ll are arranged in a cluster, as shown, the pilot burner is arranged intermediete said burners 11 equi-distant from each, mantle. The body portion of the coupling l2 is providedwith a lug 32 down one side 4thereof and underneath the body portion to end of the hole 18 may be closed in any suitment ofthe pilot tube, the

able manner, as by a screw 19. Secured in the inner end of the hole 18 is a section 2O of the pilot tube, the other section 21 of which has its lower end secured in the hole 17 and its upper end secured to the .lug 22 upon the couplmg 2, thus communicating with the gas supply above the valve 3. Y

I have found by experience that, in order to avoid the explosion frequently incident to igniting v,an incandescent burner, it is desirable to' ap ly the ignitin torch near the lower end o; the mantle. y my arrangepilot lamp is firmly supported in the position to supply an igniting llame to each of the burners.

f I preferably inclose the mantles 14 in a lass globe 23, which is su ported by the ampvcasing in any desirab e manner. As

I stated, the casing 6 forms a chimney or e burners, and hence itis desirable that sai cas' g extend down about the burners.

It is also desirable that ready access may be had Ito the xburners. in order to more leasily lacet/he'` antles iln-lposition. l have, thereore, provided theA casing 6 with a bottom extension telescoped therein: Pins 25 upon the interior of .'thlecasing 6 project through bayonet slots 2d in the extension 2li and serve as a means for securing said cxtension in position. Obviously, said exten-- sion may be raised and lield out of the way by turning the same so that said pins rest in the horizontal portions of said bayonet slots.

In case more than one burner 1l is connected to the Bunsen tube l0, l preferably placein the assage Within the coupling 12, 1mmediately eneath the tube 10, a partition member 27. Said member 27 separates thepassages in the branches 13 from each other, each passa e thusopening directl into the pipe 10. s shown in Figs. 2 an 3, where a coupling for three burners is employed, the member 27 has three radial Walls 28. Thev partition member 27 is removably 'secured in position by a screw-bolt 29. 'I have found that by thus having each branch 13 communicate directly with the tube 10, the dow of gasto reach burner 11 and the ressure at the burner ti s is better equalize especially 1n case any o the'spreaders 30 becomes more or less clogged.

The exitI opening 31 of the burner tin l5 tribute the llame. By constructingt season dares outwardly, seid. o ening beiirg conel shaped with the base of t e cone at the mouth of the opening. With the ordinary/burner tip, having an exit opening of uniform cross section, the llame is projected 'to a sharptzo-` point against the interior of the mantle, and this undue concentration of the llame at one particular point tends to burn out the mantle at such point as Well as to uneqully dise opening 31 in accordance with my invention, the darne is spread out and has a more rounded end, comes into better contact with the mantle, and increases the incandescence `of the mantle.

Having thus described my invention, l claim il 1. ln a gas lamp, the combination with a Bunsen tube, oi a burner, .a cou ling for connecting said burner to said tu e, and a pilot lamp having a pilot tube formed 'in two sections said coupling` being provided with a small hole in the'walls thereof into which one end of each of said sections issecured, said coupling thus also serving es a coupling for said pilot tube sections.

2. ln a gas lamp, the combinatirxdv W plurality oi burners, of a Brausen (tub for supplying a gaseous mixture to said burners,

.a coupling tor connecting said` burners to sa1d tube, a mantle depending from each burner, and a pilot lenig supported from said coupling land exten ing between said mantles to a point near the bottom thereof.

3. In a gas lamp, the combination with a pluralityo burners, of a Bunsen tuba,

coupling for connecting said burners to said tube, said coupling being also rovided with a small hole extending trom t e top of said coupling through the wall thereof and opening beneath said cou ling approximately equidistant from said burners, and a pilot lamp having a pilot tube formed in two sec 'tha' tions iitting into said small hole and thus connected by said cou ling.

et. ln a gas lamp, te combination with a plurality of burners, of a Bunsen tube,l 'a coupling for connecting said burners to said tube, said coupling having a pluralit ol radially arranged arms to which said are secured, the boily portion of said ling being` rovide with a lug extending down one si e thereof and beneath the same, said' lu .being provided with a small hole longitu inally thereof terminating at the bottom ot said .body ortionooncentric with saldradial arms, an a pilot tube formed in vertically arranged' `sections connected b said coupling through said sinallfhole, said lower section of the lot tube terminating coup tuners 1n a 'pilot burner, Y' coated approximately supplying a gaseous mixture to said burners,

:i coupling consisting of e tubular body portion provided with :i plurality of tubular branches extending radially from said body be secured to said er@A` und ii partition member consisting o radially extending wiills located within suld tiihiizir body portion and dividing the Same into independent passageways from said 1L;

Bumsen tube to said branches.

In Witness whereof I hereunto Subscribe my name this 22d day of January, A. D. 1908.

WILLIAM J. FRY. \Vitnesses ALFRED H. MOORE, GEORGE E. FOLK. 

